Hand-held power tool with a vibration-damped handle
The invention relates to a hand tool machine ( 2 ), in particular a drilling and/or percussion hammer, with a housing ( 4 ) and a vibration-damped handle ( 10 ) elastically supported relative to the housing ( 4 ) with two essentially parallel legs ( 20, 22 ) and a coupling element ( 44 or 46 ) between each leg ( 20 or 22 ) and the housing ( 4 ) that is pin-jointed to the leg ( 20 or 22 ) and the housing ( 4 ). The coupling elements ( 44, 46 ) are connected to each other by a connector ( 48 ) that synchronizes the movements of the coupling elements ( 44, 46 ).
1. A hand-held power tool, in particular selected from the group consisting of a rotary hammer, a percussion hammer, and both, with a housing and a vibration-damped handle that is spring-supported against the housing, with two essentially parallel legs, and a coupling element that is located between each leg and the housing and is hingedly connected with the leg and the housing,
wherein the coupling elements ( 44 , 46 ) are interconnected via a connecting element ( 48 ) that synchronizes pivotal motions of the coupling elements ( 44 , 46 ) relative to the legs and to the housing, and
wherein the connecting element ( 48 ) is not connected with an element selected from the group consisting of the housing ( 4 ) and the handle ( 10 ),
wherein said connecting element ( 48 ) is a longitudinally extending connecting rod oriented substantially transverse to a working direction of the power tool, having opposite ends hingedly connected to the coupling elements ( 44 , 46 ), and moveable along its longitudinal extension relative to said housing and relative to said handle transversely to said legs.
2. The hand-held power tool as recited in claim 1 , wherein the connecting element ( 48 ) is oriented essentially transverse to a working direction (A) of the machine tool ( 2 ).
3. The hand-held power tool as recited in claim 1 , wherein opposite ends of the connecting element ( 48 ) are hingedly connected to the coupling elements ( 44 , 46 ).
4. The hand-held power tool as recited in claim 1 , wherein the connecting element ( 48 ) is located inside the hollow handle ( 10 ).
5. The hand-held power tool as recited in claim 4 , wherein at least one of the coupling elements ( 44 , 46 ) extends through an open end of a leg ( 20 , 22 ) into the hollow interior of the handle ( 10 ).
6. The hand-held power tool as recited in claim 1 , characterized by at least one compression spring ( 34 ) located between the handle ( 10 ) and the housing ( 4 ).
7. A hand-held power tool, in particular selected from the group consisting of a rotary hammer, a percussion hammer, and both, with a housing and a vibration-damped handle that is spring-supported against the housing, with two essentially parallel legs, and a coupling element that is located between each leg and the housing and is hingedly connected with the leg and the housing, wherein the coupling elements ( 44 , 46 ) are interconnected via a connecting element ( 48 ) that synchronizes the motions of the coupling elements ( 44 , 46 ),
wherein at least one coupling element ( 44 ) is designed as a two-armed lever ( 50 ), whose one lever arm ( 54 ) is hingedly connected with the housing ( 4 ), and whose other lever arm ( 56 ) is hingedly connected with the connecting element ( 48 ), the lever ( 50 ) between the two lever arms ( 54 , 56 ) being hingedly connected with a leg ( 20 ) of the handle ( 10 ).
8. A hand-held power tool, in particular selected from the group consisting of a rotary hammer, a percussion hammer, and both, with a housing and a vibration-damped handle that is spring-supported against the housing, with two essentially parallel legs, and a coupling element that is located between each leg and the housing and is hingedly connected with the leg and the housing, wherein the coupling elements ( 44 , 46 ) are interconnected via a connecting element ( 48 ) that synchronizes the motions of the coupling elements ( 44 , 46 ),
wherein at least one coupling element ( 46 ) is designed as a two-armed lever ( 52 ), whose one lever arm ( 58 ) is hingedly connected with a leg ( 22 ) of the handle ( 10 ), and whose other lever arm ( 60 ) is hingedly connected with the connecting element ( 48 ), the lever ( 52 ) between the two lever arms ( 58 , 60 ) being hingedly connected with the housing ( 4 ).
9. A hand-held power tool, in particular selected from the group consisting of a rotary hammer, a percussion hammer, and both, with a housing and a vibration-damped handle that is spring-supported against the housing, with two essentially parallel legs, and a coupling element that is located between each leg and the housing and is hingedly connected with the leg and the housing, wherein the coupling elements ( 44 , 46 ) are interconnected via a connecting element ( 48 ) that synchronizes the motions of the coupling elements ( 44 , 46 ),
wherein at least one coupling element ( 44 , 46 ) is designed as a disk ( 72 , 74 ) that is pivotably connected at its center with the housing ( 4 ) and that, at a distance from its center, is hingedly connected with one of the legs ( 20 , 22 ) and the connecting element ( 48 ).